Table 3.

Multivariate survival analysis for disease-free and overall survival of the 42 patients

		Disease-free survival			Overall survival
Variable	Hazard ratio	95% confidence interval	P	Hazard ratio	95% confidence interval	P
Gender (male vs female )	0.448	0.144–1.395	0.166	0.275	0.069–1.100	0.068
Age (≥50 vs <50)	1.058	0.249–4.507	0.939	0.777	0.134–4.491	0.778
Resection (yes vs no)	0.782	0.113–5.429	0.804	1.937	0.219–17.092	0.552
Adjuvant treatment (yes vs no)	1.385	0.421–4.555	0.591	2.853	0.649–12.545	0.165
Tumor size (>7 cm vs ≤7 cm)	3.079	0.657–14.417	0.153	2.514	0.371–17.041	0.345
Myasthenia gravis (yes vs no)	1.204	0.182–7.945	0.847	0.598	0.046–7.813	0.695
Stage (III + IV vs I + II )	6.163	2.421–15.691	0.000	5.462	1.923–15.514	0.001